The authors find when the PDO is in phase with the 11 year sunspot cycle, the pattern of sea level pressures and surface temperatures shift in comparison to when they are out of phase. The authors also find the NAO is amplified when it is in phase with the sunspot cycle.

These effects may represent another solar amplification mechanism by which tiny 0.1% changes in solar activity can be amplified to large scale effects upon climate.

When the PDO [Pacific Decadal Oscillation] is in phase with the 11 year sunspot cycle there are positive SLP [sea level pressure] anomalies in the Gulf of Alaska, nearly no anomalous zonal SLP gradient across the equatorial Pacific, and a mix of small positive and negative SST [sea surface temperature] anomalies there. When the two indices are out of phase, positive SLP anomalies extend farther south in the Gulf of Alaska and west into eastern Russia, with a strengthened anomalous zonal equatorial Pacific SLP gradient and larger magnitude and more extensive negative SST anomalies along the equatorial Pacific. In the North Atlantic, when the NAO [North Atlantic Oscillation] is in phase with the sunspot peaks, there is an intensified positive NAO SLP pattern. When the NAO is out of phase with the peaks, there is the opposite pattern (negative NAO). The relationships are physically consistent with previously identified processes and mechanisms, and point the way to further research.

9 comments:

"Before it is safe to attribute a global warming or a global cooling effect to any other factor (CO2 in particular) it is necessary to disentangle the simultaneous overlapping positive and negative effects of solar variation, PDO/ENSO and the other oceanic cycles. Sometimes they work in unison, sometimes they work against each other and until a formula has been developed to work in a majority of situations all our guesses about climate change must come to nought."

The Farmers Almanac has been predicting Climate 2 years in advance since 1818 and has gotten their forecasts correct 80% to 85% of the time. And their method is primarily based on solar cycle observations.

Remember when Dow was losing all those mega-award lawsuits due to broken breast implants and the negative effects that just EVERYbody knew the silicone was causing to women's bodies, then the science finally caught up and said, nope, no causal effects. That's just about where we are with AGW. All of The Beautiful People just know that mankind's effect on the world MUST be detrimental (and no Beautiful Person license is issued if you fail to subscribe, enthusiastically to this...), and along comes that nasty thing "science". Critical thinking is so foreign to this sect, and they fight it with every fiber in their being. Irrationality is so much fun when everybody is doing it...